31st Aug, 2026 12:00

The Gold Cup – Classic, Performance & Supercar Auction

 
Lot 30
 

1974 MG B GT
***NO RESERVE*** Extensively documented example with uprated engine and significant recent expenditure

Registration – GRB 631N

Chassis No. – GHD5-359876G

M.O.T. – April 2027

Odometer – 39,750

Few British sports cars have enjoyed the enduring popularity of the MGB GT, and ‘GRB 631N’ is a particularly interesting example thanks to its uprated mechanical specification and impressively detailed history file.

At the heart of the car is a 1950cc Stage II engine. The accompanying documentation records that the reconditioned unit was sourced from the MG Owners’ Club and installed in ‘GRB 631N’ in June 1997, with its first run taking place that August. The specification sheet records twin 1.5-inch SU carburettors with AAA needles and K&N filtration, together with uprated ignition and exhaust arrangements.

The substantial history file provides an unusually detailed insight into the car's development over several decades. Period photographs document earlier restoration work, including images annotated ‘GRB631N May 93 Rebuild’, showing attention to the front bodywork and surrounding structure.

Further invoices demonstrate continued investment in the car. Documentation from Acceleration Services records substantial structural work undertaken in 2014, including removal of the interior, cutting out affected sections around the floor, chassis leg and sill area, fabrication and welding of replacement panels, sealing and protective treatment before the interior was refitted.

More recently, the MGB has benefited from considerable mechanical expenditure. An invoice from Oliver Wardle Classic Cars dated May 2026 totals £2,221.88 and records an engine service, gearbox oil change and brake-fluid flush, together with attention to the differential, replacement rear wheel bearings and oil seals, carburettor cleaning, balancing and adjustment, a new SU fuel pump, new stainless-steel manifold and exhaust system and replacement nearside rear axle brake pipe.

The odometer currently displays 39,450 miles and the car passed its most recent MOT in April 2026, with the certificate valid until 13 April 2027. It should be noted that historic documentation records the car's mileage as 117,390 when the present engine was installed in 1997; consequently, the current odometer reading should not be interpreted as the vehicle's total mileage.

Offered with its substantial collection of invoices, historic restoration photographs, engine specification and installation records, current V5C and MOT documentation, ‘GRB 631N’ represents an interesting and extensively documented MGB GT that combines the model's familiar character with a considerably more purposeful mechanical specification.

  • Uprated 1950cc Stage II engine with twin SU carburettors
  • Extensive history file including restoration photographs, invoices and engine documentation
  • Over £2,200 of mechanical work completed in May 2026; MOT until April 2027
  • Cat D Sadly 1999 prior to full restoration

 

'A Buyer’s Premium applies to the Hammer Price of this Lot if your bid is successful, as per the following;  Motor Cars 12.5% + VAT (minimum £600 + VAT), Motorcycles and Bicycles 12.5% + VAT (minimum £250 + VAT); Registration Numbers 15% + VAT (minimum £50 + VAT); Automobilia 15% + VAT (minimum of £5 + VAT).'

 Potential buyers should satisfy themselves with the description and condition of each lot prior to sale. Each vehicle is offered ‘as is/as seen’ as per the terms and conditions for the auction, buyers are asked to inspect the vehicle in person or use a professional to carry out the service. Any disputes over descriptions will not be entertained.

 

 

Buyer's Premium applies (subject to a minimum charge and VAT)

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You can bid in person, by telephone or online. 

VIEWING

Descriptions of lots for sale are produced from information provided by the lot vendor, we always recommend that you view, in person, any and all lots in which you are interested and that you inspect any paperwork available in the Documents Office. If you are unable to attend the auction in person, Hampson Auctions can offer condition reports via photographs and, dependent on technology/connection available, remote viewing via live video call.  

The Hampson Auctions team members are not mechanics and as such the information provided will be only their honest opinion.

BIDDING 

If attending the event, please make yourself known to the auctioneer when you wish to bid on a lot, either by a wave or vocally if they haven’t seen you. Once an auctioneer has taken a bid from you, they will always come back to you if you have been outbid. 

If you wish to make live bids via telephone, please speak with one of our team on 01606 828124 and we will arrange to have someone available to act upon your bidding instruction. 

If bidding online, please follow the auction live and make bids using the live online platform.

PAYMENTS 

Payment for lots is required by 1pm the day following the auction and can be made by any form of cleared funds. Should payment not be received by then, any lot(s) will be taken into storage at the Buyer's expense.

COLLECTION

Removal of lots can take place once the auction has finished and up until 1pm on the following day. If you are unable to collect yourself, please speak with one of our team should you wish put in contact with our transport / storage partners site at the auction.

DOWNLOAD OUR BUYERS' TERMS & CONDITIONS

 

Auction: The Gold Cup – Classic, Performance & Supercar Auction, 31st Aug, 2026

New Consignments Added Daily
Our team is continually photographing, cataloguing and preparing further entries for the auction.

Our flagship Gold Cup Auction returns to Oulton Park on Bank Holiday Monday, forming a centrepiece of one of the UK’s most celebrated historic motorsport weekends.

Held as part of the prestigious Oulton Park Gold Cup, which returns to its traditional August Bank Holiday date for 2026, the event brings together three days of racing, entertainment and concours-level machinery. With Sunday and Monday acting as the main showpiece days, the circuit attracts thousands of enthusiasts, collectors and motorsport fans, creating an exceptional backdrop and audience for our auction.

The Gold Cup Auction presents a carefully curated selection of classic cars, performance models and supercars, aligned with the quality and prestige of the event itself. With strong footfall, high engagement and targeted marketing, it remains one of the most important sales within the Hampson calendar.

Viewing Days
Saturday 29th August and Sunday 30th August
9am – 6pm
Monday 31st August
9am - 12 noon                                                                                                                                                                                                                                            

Auction
12 noon Monday 31st August 2026

If you wish to consign your vehicle to this auction, you can request a valuation or contact the Hampson Auctions team on 01606 828124.

View all lots in this sale

 

Please click on the image below to discuss finance options with the Apollo Capital team led by Andy King and David Moss, experts in luxury, supercar & hypercar finance for more than 25 years. Before you bid, you must make sure you have the funds ready or have approved finance in principal with Apollo.

 

Fill in the form below and one of our team will get in touch with a no-obligation valuation. We will also take you through the consignment and valuation process, to enable you to make an informed decision.

If you prefer to contact us directly please call 01606 828 124 or email info@hampsonauctions.com

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